Metallic leaf applying device



JUN 16, 193L s. H. swALLow METALLC LEAF APPLYING DEVICE Filed NOV. 7. 1928 Patented June 16, 1.931

l UNITED STATES. PATENT QFFICE sTUART n. sWALLoW, orrnoviniiirca, :a-Hoiiis ISLAND, Assiduo?. To w. H.' con Maia.

UFACTURING coiviPANY, oF PROVIDENCE,

. kRHODE ISLAND niionn IsLeNn, ii coRPoRATIoii oF METALLICLEAFAPrLYiNe :envios Application ined November aises. serai Nq. airs/4.3.',y

This invention relates*to'improvements in a metallic leaf applying device andthe packe age roll therefor; and has for its object to provide in such a device a shaft Von which c the package roll isinounted and to provide the core of this roll with one or more openings to be engaged by a drive member fixed on the shaft by means of which the roll is' caused to be driven in time with the shaft. Y

With these and other objects in view, the invention consists of certain novel features of construction, as will'be more fully described, aiid particularly pointedout in thel appended claim.

In the accompanying drawings: c Fig. --l is a perspective view of an improved inetallic-leaf applying device. Fig. 2 is a central section thru the apply# ing device showing my improved package.v

roll mounted on and fixed to the shaft in the device with its leafy metal backing strip or ribbon, leading to and about the depositing roll.

Fig. 3 isaii edge view of the device partly in section showing a metallic leaf package roll mounted therein and pressed into engagement with the shaft. drive memberby a y spring, `whereby the`-roll may be slid laterally flat spring. .f f y Fig. 4 is a perspective view of the drive member fixed to the shaft.k '.Fig. 5 is a face view of the metal"l strip Y package yroll having a plurality ofopenings spaced about the face of its core to selectively y receive the drive member.

Fig. 6 is a diagrammatic view illustrating the two eXtreme positions of the depositing roll relative to the center line thru the applying device .at the start and finishofa depositing stroke wherein the surface of the roll 'has been caused to tiavel'from a point in advance of this line to apoint back of thisline ing strip of paper carrying its metallic leaff to be deposited.V

Itis found in the -practicaluse of metallic leafdepositing"devices, particularly those of the class designedfto work in groups to si! niultaneonsly apply a plurality of strips of metallicleaf `to the back of books and the like having-rounded surfaces that owing to the'cniwature ofthe back and the angleat `which the device is mounted to bey swung in its frame (not shown) the depositing'roll Y.

must ofjn'ecessitybe rotated backward, after each depositing operation, a short'distance from its stopping point each time a new line is started,` iii' order to prevent waste ofthe precious metal'which is being applied,and iii order to eifectthis backward rotatingof they depositing; roll, it is found of advantage to securethe package roll'to its shaft and `then rotate this shaftbackward to drag the depositingroll backward thru its .backing strip tothe desii'edpoint and in order to alc# complish this in 'a simple and effective way it"isfound of advantagev to lock rthe pack@ age roll toits shaft-by some suitable means.V

*In some instances, I may provide a pluralityof 'openings in the side face of the core ofthepackage roll into any one of whichr the shaft drive ymember may. bek pressedl by a against itsspring pressure and releasedfroin the driveto be rotated independently of the' *shafty andfits gear-operated drive, to adj ust the tension of itsinetallic leaf backing strip independently of the shaft rotation, and the rfollowing is a detailed description of the pres i ent embodiment of my invention showing one v'means lbv ywhich these advantageous vresults may be accomplished. I f

Wi hreference Vto the drawings, lO desigf# nates one of the metallic leaf applying devices which is designed v'to be mounted in a frame not shown) to `be swung on a pivot across the backof a book onto whichl one or c Y mounted on an adjusting rod 15b againstthe tension ofa spring 150'the'adjiisting rod 15?) being screiv-threadedly mounted in the head of theleaf applying device and in these strips is rotatably mounted the shaft 12 having a driving pinion 13 fixed to one end and meshing with a gear 14 mounted for movement therewith by means of which this shaft may be rotated when desired. On this shaft is fixed a driveplate 16 by a set screw 17 the plate having a laterally-extending drive pin 18 for the purpose presently described. On this shaft is loosely mounted a package roll of metallic leaf, which roll comprises a core 20 of wood, or other suitable material, on which is wound a length of backing paper carrying the usual layer of metallic leaf such as gold leaf, see Fig. 7

It is found in practice necessary to provide some practica-l means by which this roll may be caused to be rotated with this shaft and at the salme time to be readily detached therefrom when desired, and to accomplish this result in a simple and practical way, I have herein shown one simple construction which is that of providing one or more openings 21 in the package roll core to receive the pin 1S in the drive plate 16 and in order to yielda'bly press this drive pin into the selected opening, Ilia-ve provided a flat spring Q2 having one end fixed to one of the plates 15 and its free end engaging the 'face of the package roll core opposite to that face vha ving the drive pin receiving holes, whereby when it is desired to rotate this roll 19 independently of the shaft to take up the slack of the backing strip, or

for any other purpose it is only necessary to slide the roll sideways on its shaft against its spring tension and after rotating thesame on its shaft the desired amount2 it is released causing the pin 18 to engage another' of the several holes 21 in the core and the adjustment is completed.

In the forward ends of these plates 15 the deposit roll 23 is piif'ot-ally mounted and about which the backing strip Q4 carrying its metals lic leaf 25, see Fig. 7, is led a-ndwound from the Vpackage roll 19 in the usual way.

By the use of my improved construction the package roll is mounted to be driven by the shaft 1-2 Aa'nd'yet may be readily detached therefrom when desired for adjustment. Thus, considering Figure 6, when the roll of gold leaf is moved from position Ato position B, there will be waste of gold leaf when again applying the rollr to a book. The improved keying of the package rolls to the actuating shafts permits positive backward rotation of the package rolls, and the plurality of recesses facilitates positioning and adjustment.

The foregoing description is directed solely7 towards the construction illustrated, but I desire it to be understood that I reserve the priv ilege of Aresorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only 'j by the terms ofthe appended claim,

STUART H. SWALLOW. 

